ZELMI - (Scanning) Transmission Electron Microscope - (S)TEM

TU - Technische Universität Berlin

last updated: July 19, 2023

About the Laboratory

ZELMI - (Scanning) Transmission Electron Microscope - (S)TEM

TU - Technische Universität Berlin

@ Institute of Optics and Atomic Physics

This Laboratory is part of:

ZELMI - Electron Microscopy Center laboratory complex
Networks: Geo.X

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Description

The ZELMI lab for transmission electron microscopy (S)TEM provides high-resolution images of electron-transparent samples, analyses of topography and microstructure, crystal and crystal defect analyses via EDX as well as sub-atomic resolution in HR-(S)TEM.
For high-resolution transmission electron microscopy analyses, two devices are available. The JEOL JEM-ARM300F2 "GrandARM2"is one of the most versatile and highest-resolution STEMs. The first instrument of this type outside Japan was installed at our facility in 2020-21. Its spectrum ranges from sub-atomic (!) resolution imaging, to atomic resolution elemental mappings, to nano beam diffraction and so-called 4D STEM analyses with the EDX detectors and a Direct Electron (Pixelated) detector.
The FEI TITAN80-300 Berlin Holography Special TEM is a TEM specialized in electron holography and ultrahigh resolution, equipped for this purpose with a Cs corrector on the image side and a world-first X lens. It was installed in 2011.
For conventional TEM a Tecnai G2 20S-Twin is used which received an upgrade to (S)TEM in 2018. Thanks to the EDX system, it is ideally suited as an analytical screening instrument, which is also capable of high-resolution investigations. Due to the versatile holder fleet, the instrument is ideally suited for various types of examination methods.

Instruments

HR-TEM - High-Resolution Transmission Electron Microscope
Transmission Electron Microscopy (TEM) are patterned after Transmission Light Microscopes and will yield similar information. Morphology The size, shape and arrangement of the particles, which make up the specimen as well as their relationship to each other on the scale of atomic diameters. Crystallographic Information The arrangement of atoms in the specimen and their degree of order, detection of atomic-scale defects in areas a few nanometers in diameter Compositional Information (if so equipped) The elements and compounds the sample is composed of and their relative ratios, in areas a few nanometers in diameter A TEM works much like a slide projector. A projector shines a beam of light through (transmits) the slide, as the light passes through it is affected by the structures and objects on the slide. These effects result in only certain parts of the light beam being transmitted through certain parts of the slide. This transmitted beam is then projected onto the viewing screen, forming an enlarged image of the slide. TEMs work the same way except that they shine a beam of electrons (like the light) through the specimen(like the slide). Whatever part is transmitted is projected onto a phosphor screen for the user to see. [Source: University of Nebraska-Lincoln] (Source: Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 16.3 [...] )
TEM - Transmission Electron Microscope

Analytical Methods

HR-TEM - High-Resolution Transmission Electron Microscopy
Transmission Electron Microscopy (TEM) are patterned after Transmission Light Microscopes and will yield similar information. Morphology The size, shape and arrangement of the particles, which make up the specimen as well as their relationship to each other on the scale of atomic diameters. Crystallographic Information The arrangement of atoms in the specimen and their degree of order, detection of atomic-scale defects in areas a few nanometers in diameter Compositional Information (if so equipped) The elements and compounds the sample is composed of and their relative ratios, in areas a few nanometers in diameter A TEM works much like a slide projector. A projector shines a beam of light through (transmits) the slide, as the light passes through it is affected by the structures and objects on the slide. These effects result in only certain parts of the light beam being transmitted through certain parts of the slide. This transmitted beam is then projected onto the viewing screen, forming an enlarged image of the slide. TEMs work the same way except that they shine a beam of electrons (like the light) through the specimen(like the slide). Whatever part is transmitted is projected onto a phosphor screen for the user to see. [Source: University of Nebraska-Lincoln]
Transmission Electron Microscopy (TEM) are patterned after Transmission Light Microscopes and will yield similar information. Morphology The size, shape and arrangement of the particles, which make up the specimen as well as their relationship to each other on the scale of atomic diameters. Crystallographic Information The arrangement of atoms in the specimen and their degree of order, detection of atomic-scale defects in areas a few nanometers in diameter Compositional Information (if so equipped) The elements and compounds the sample is composed of and their relative ratios, in areas a few nanometers in diameter A TEM works much like a slide projector. A projector shines a beam of light through (transmits) the slide, as the light passes through it is affected by the structures and objects on the slide. These effects result in only certain parts of the light beam being transmitted through certain parts of the slide. This transmitted beam is then projected onto the viewing screen, forming an enlarged image of the slide. TEMs work the same way except that they shine a beam of electrons (like the light) through the specimen(like the slide). Whatever part is transmitted is projected onto a phosphor screen for the user to see. [Source: University of Nebraska-Lincoln] (Source: NASA; UUID: e5ab49d5-5f99-43d6-85bd-8db629f7bc7b) (Source: Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 16.3 [...] )
TEM - Transmission Electron Microscopy
The Energy Dispersive Analysis of X-ray (EDAX) is a tool that determines the chemical composition of elements.
The Energy Dispersive Analysis of X-Ray (EDAX) is a tool that determines the chemical composition of elements. (Source: NASA; UUID: b3a7155c-5089-4388-a148-8d4defc520f8); Measurement method of X-Ray fluorescence analysis in which the energies and intensities of characteristic X-radiation are used to measure amounts of elements. (Source: IUPAC; https://doi.org/10.1515/pac-2019-0302) (Source: Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 16.3 [...] )
EDAX - Energy Dispersive Analysis of X-Ray
EDS, EDX, EDXA, EDXS, Energy Dispersive X-Ray Microanalysis, Energy Dispersive X-Ray Spectroscopy, Energy-dispersive X-Ray Analysis, Energy-dispersive X-Ray Spectroscopy, XEDS

Laboratory Keywords

In addition to the instruments and analytical methods listed above, these keywords help to describe the work done in the laboratory. This may include the type of samples, standard materials, specific preparative or analytical methods and specific instrument characteristics.

Elemental Analysis via Diffraction Patterns
Qualitative Energy Dispersive X-Ray Analysis
STEM
Scanning Transmission Electron Microscope
Scanning Transmission Electron Microscopy

Disciplines

Geoscience > Geochemistry > Geochemistry
Geochemistry
Geoscience > Geochemistry > Mineralogy
Mineralogy
Geoscience > Geology > Geology
Geology

The Research Network for Geosciences in Berlin and Potsdam

ZELMI - (Scanning) Transmission Electron Microscope - (S)TEM

TU - Technische Universität Berlin

About the Laboratory

ZELMI - (Scanning) Transmission Electron Microscope - (S)TEM

Access

Description

Instruments

Analytical Methods

Laboratory Keywords

Disciplines

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